Suppose the EU is a food importer and the CAP keeps food prices in the EU at the ‘Price Floor’ shown in the diagram using an import tariff while world food prices are
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12 |  |  Prior to the supply curve shift, the EU could enforce the price floor with a tariff equal to , while afterwards it can only enforce the price floor by buying a quantity of food equal to ; thus prior to the shift, enforcing the price floor made a contribution to the EU budget equal to while after the shift, the price floor cost the EU budget , assuming that the food the EU buys is not resold. |
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13 |  |  Prior to the supply shift, the net welfare cost of the price floor was . |
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14 |  |  After the supply shift, the welfare impact of the price floor compared to free trade is for EU consumers, for EU producers, and for EU taxpayers. |
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15 |  |  If the EU sells the food it buys post-supply shift on the world market, the world price will and this will foreign food producers. |
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